Switchable Aperture of Liquid Crystal Lens Array Fabricated with a Hole-Array Patterned Metal Foil Spacer

A liquid crystal lens array (LCLA) with switchable dual apertures via a middle layer of hole-array patterned metal foil in the cell is demonstrated. The behaviour of electro-optical capabilities in fabricated LC lens arrays is directly relative to the ways of applying voltages, especially for switchable lens apertures. The hole-array patterned metal foil was fabricated via a laser drilling process, which was responsible for some functions including conductive electrode, controllable spacer, and cell substrate.